Window sash



WINDOW SASH w. H. KLocKE Filed Jan. 31. 1927 Jan. 15, 1929.

Patented Jan. 15, 1929.

unirse srArss PATENT OFFICE.

WILLIAM H. KLOCKE, OF WOODHAVEN, NEW YORK, ASSIGNOR TO KALMAN STEEL COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

WINDOW SASH.

Application led January 31, 1927. Serial No. 164,858.

My invention relates to Window sashes and particularlyrto a novel method of manufacturing the same. It has Jfor its object the production orn a sash that will possess unusual strength and rigidity.

The Weak joint in metal sash construction has heretofore been the joint or junction between the longitudinal and lateral members or mullions.

In my construction, I obviate the common detects by constructing the sash units of integral form, each unit comprising a continuous longitudinal member andY integral lateral members having the saine or similar cross sectional shape as the longitudinal member. The units are so designed as to be adapted for production by rolling, thus materially reducing the cost of manufacture and assuring a structure or" uniform strength and rigidity. j

The sash and the method of construction will be better understood by reference to the accompanying drawing in which;

Fig. l is a plan view of a unit in the form in Which it comes from the rolls;

Fig. 2 is a sectional vieu7 on the line 2-2 of Fig. 1

Fig. 8 is a plan view showing a subsequent stage in the production ot' the unit, the web ot' metal having been removed, the lateral arms bent outwardly and the end of the arms having been forged to provide for attaching tongues for an adjacent unit, one of such units being shown in dotted lines in that figure.

Fig. It is a detail showing the method of. attachment of adjacent arms, and;

Fig. 5 is a sectional view on the line 5 5 of Fig. 4.

The first step in the production of the sash is that of rolling a blank into the forni shown in Figs. 1 and 2. In that form the longitudinal member A is continuous and of the cross-sectional shape shown in Fig. 2.

The member is generally T-shaped in crossV section, comprising a web, 10, having a head, 11.

Inasmuch as it is impossible to roll a structure and eliminate all the metal between the rolls, there Will be left a web indicated at 12. at the meeting line between the pair of rolls.

Thenext step is that of cutting out the web of metal which may be quickly accomplished by any suitable means. The next step is that of bending the lateral arms, which are indicated at B, into a position perpendicular to the longitudinal member A. The arms are shown to be of the same cross sectional shape as that of the longitudinal members and comprise a. web, 13 and a head, 14. After the arms are bent into the position shown in Fig. 3, the web portions thereof at their ends are forged to provide a recess 15 and a tongue 16, the tongue representing the metal displaced in forming the recess. Thereafter, two units similarly constructed are associated, With the tongues and recesses in interlocking engagement, and the overlapped portions are Welded as at 17, in Figs. 4 and 5. In that position the head, 14, of the lateral meinbers, Vare in abutting engagement, the web portions only being overlapped.

A sash constructed in the manner described will be found to be extremely rigid and as there are no joints at the intersections of the mullions, the structure will have exceptional strength. A sash may therefore be constructed having the required strength and rigidity by the use of less Weight of metal.

The shape of the members constituting the sash units is not important and variations in the shape and in the manner of attachment of adjacent units may be made Without departure from the spirit of my invention.

I claim:

1. A Window sash comprising in combination a continuouslongitudinal member and integral laterally projecting arms, and means for joining a plurality of so-ormed units by overlapping engagement at the ends of said arms.

2. In combination, a Widow sash composed of a plurality of units each unit consisting of a continuous longitudinal member and integral lateral arms, the arms of a plurality Vof said units being brought into register,

and means for joining overlappingportions of said registering arms.

3. In combination, a Window sash composed of a plurality of units, each unit consisting of a longitudinal member and integral perpendicular arms, the member and 5 arms being of' similar cross-sectional shape, the ends of the arms being shaped to provide a tongue adapted to overlap the end of a registering arm on an adjacent unit, and means for joining said registering arms by means of said overlapping projections. 10

1n testimony whereof, I have axed my signature.

WILLIAM H. Kroese. 

